Card-clothing.



E V.- BATES & RQB. ROBINSON.

011m CLOTHING. APPLICATION FILED MAY 14. 1-908.

' Patenteq May 25, 1909.

7 1.5: d'aK INVENTORS,

BY /%A;/W

ATTORNEY.

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- nate with a plurality of rows of bent teeth.

UNITED STATES PATENT OFFICE.

EDDO V. BATES AND ROBERT B. ROBINSON, OF LOWELL, MASSACHUSETTS, ASSIGNORS TO BATES & ROBINSON MACHINE COMPANY, A CORPORATION OARD-GLOTHING.

Patented May 25, 1909.

Original application filed September 30, 1907, Serial No. 395,170. Divided and this application filed May 14., 1908.

Serial No.

To all whom it may concern:

Be it known that we, Enno V. BATES, a citizen of the United States, and ROBERT B. ROBINSON, a citizen of Canada, both residing at Lowell, in the county of MiddleseX and State of Massachusetts, have invented certain new and useful Improvements in Card-Clothing, of which the following is a specification.

Our invention relates to card. clothing such as is used upon machines for carding or straightening the fibers of wool, cotton, and. other similar stock, more particularly wool. It is more particularly useful in the manner shown and claimed in application for patent on carding machines filed by us September 30, 1907 of which this is a division.

By attaching our improved card clothing to the stripper of a carding machine, the stripper will act also as a worker, and by attaching it to a worker, the worker will also act as a stripper. It is also valuable in many other analogous uses as where it is desirable that the stock should not sink into the teeth of the roll or other part to which the card clothing is attached.

In the drawings, Figure 1 is a magnified side view of a strip of card clothing made according to our invention. Figs. 2, 3, and 4 show different forms of staples. Figs. 5 and 6 show different arrangements of the teeth of the card clothing. Fig. 7 shows in perspective an arrangement of teeth wherein a plurality of rows of straight teeth alter- I ig. 8 shows a similar construction with adjoining single rows of straight teeth. and bent teeth. It is well known, in the art of carding, that where two rolls covered. with card clothing travel with their points in close proximity to each other and where one or the other or both carries a web, by differ ent arrangements of the teeth of the card clothing, different results are produced. In one case, carding or straightening of the fibers will occur; in another case one roll will strip the fiber from the teeth of the other roll; and in still another case, the fiber will be brushed off and rolled up between the two.

The ordinary card clothing has teeth which are bent at an angle with the radial lines of the cylinder to which they are attached. When clothing with such teeth is run point to point, as a rule, carding will take place. On

the other hand, if the teeth of adjoining cylinders are set with their points in the same direction and the cylinders run at different speeds in the direction of the points of the card clothing teeth, the cylinder with the faster surface speed will strip or brush the web from the other. Numerous other combinations are familiar to carders.

In the common form of cards, the main cylinder travels at a very high surface speed, as say one thousand feet a minute, and it is surrounded by a plurality of slow running workers whose teeth are point to point with those on the n ain cylinder. The surface speed of the workers is say sixteen feet a minute. In front of each worker is a stripper which cleans the stock from the worker and is itself cleaned or stripped by the main cylinder. In such case the card clothing is attached to the stripper so that the teeth point in the opposite way from the teeth of the workers and the main cylinder. Thereby the teeth of the stripper point in the same direction with those on the worker and on the main cylinder and are not point to point therewith. The surface speed of the stripper is say two hundred and fifty feet a minute. N o carding takes place between the strippers and the main cylinder in such case, but the carding all takes place between the workers and the main cylinder.

Ne make our card clothing as shown in Fig. 1 with certain rows or sets of bent teeth M, M of the ordinary construction. These teeth start backward at a reverse angle from the foundation N of the card clothing to form a leg 31 and are bent to pitch forward to form a leg 32. Thereby a sort of hook is formed, the point of which is preferably in advance of its base. The other teeth 0 O which are straight pitch backward substantially in the same direction with legs 31. Preferably leg 32 of teeth M should pitch or slant forward from a direction perpendicular to foundation N. Straight teeth 0, on the other hand, preferably pitch backward from such direction. The rows of straight teeth 0 and of bent teeth M may be arranged singly as shown in Fig. 8 01' a plurality of rows of straight teeth can alternate with a plurality of rows of bent teeth as shown in Fig. 7.

The card clothing may be made of staples with two bent legs 40, as shown in Fig. 2,

which alternate in different combinations with staples having two straight legs 41 such as shown in Fig. 4, or staples may be used such as shown in Fig. 3 with one straight leg 41 and one .bent leg 40. With clothing. so made, there will be more or less flexibility or give to the teeth.

We do not confine ourselves to the exact degree of itch for the teeth shown in Fig. 1, as the ang es between the legs of the straight and. the legs of the bent teeth M and O may be varied as shown in Fig. 5, and in fact the straight teeth may stand at right angles to the foundation N as shown in Fig. 6.

Other arrangements of rolls provided with our improved card clothing will suggest themselves to those familiar with the art of carding, where it is desirable for a roll to card and, at the same time, to strip another roll. Many other uses for our card clothing will also suggest themselves.

Our invention resides in making card clothing wherein the teeth pitch in different or opposite directions.

Our invention is card clothing made with the usual elastic foundation through which are passed pliant or flexible wire staples in such manner that the wire legs form holding teeth as distinguished from saw teeth. These teeth are arranged in two sets. On

one set, the part of the shanks above the knee or next the points pitches in one direction from the same or parallel planes perpendicular to the foundation. 1n the other set, the teeth are preferably straight, having no knee, and in this set, the teeth are either perpendicular to the foundation or else pitch in the other direction from said v perpendicular plane. Or to express it differently, the keen of one set of teeth is on one side of said perpendicular planes and the keen of the other set is either on the other side or else their keen is zero. The teeth of each set are bent or inclined so that they rest in parallel planes which are perpendicular to the foundation and substantially perpendicular to the planes first mentioned. The teeth with the same pitch may alternate in the same row with those of the other pitch, or a row of one pitch may alternate with a parallel row of a different pitch. Several rows of the same pitch may alternate with one or more rows of the other pitch but the number of adjoining rows of the same teeth must not be too many.

The application of our card clothing to a carding machine and its operation thereon is shown in our application for patent filed September 80, 1907 from which this application was divided.

What we claim as our invention and de sire to cover by Letters Patent is,

1. Card clothing which comprises afounda. tion and wire teeth the points of which slant at different angles on opposite sides of planes perpendicular to the foundation.

2. Card clothing in which bent teeth are interspersed with straight teeth which pitch in a different direction.

3. Card clothing which comprises a foundation and bent teeth which pitch in. one direction interspersed with straight teeth which pitch in a different direction.

4. Card clothing which comprises a foundation and rows of teeth which pitch in one direction and alternate rows of other teeth which pitch in a different direction.

5. Card clothing which comprises a foundation and rows of bent teeth which pitch in one direction and alternate rows of straight teeth which pitch in a different direction.

6. Card clothing which comprises a foundation and bent wire legs which form teeth which pitch in one direction and are interspersed with straight wire legs which form teeth which pitch in a different direction.

7. Card clothing which comprises a foundation and wire legs forming teeth which pitch in one direction and are interspersed with other wire legs which itch in a different direction, the points of a 1 said teeth being the same vertical distance from the foundation.

In testimony whereof we hereto affix our signatures in presence of two witnesses.

EDDO V. BATES. ROBERT B. ROBINSON. Witnesses:

NATHAN S. PRATT, GARDNER W. PEARsoN. 

